adj. used to describe the greatness of an item, event or substance
often in reference to extremely potent marijuana or "diggity dank," although it may stand alone in reference to potent marijuana

1. this bud is the fuckin diggity dude.
2. lets get a bag of that diggity dank.
3. man that band is the bomb-diggity (outdated usage), -hearing this usage of "diggity" should prompt a swift backhand to the face of the user-